i have heard/seen that leather shops can treat leather straps so that they won't patina and will remain the same lightness as when purchased. i am not sure what the technique is called, but many of my friends are having it done at leather shops on their brand new LV items. i guess i'll have to wait and see how their bags eventually look, but there is (apparently) a way to stop patina on the original LV leather strap. i like a dark patina, personally.
Oooh, sound interesting. I did see this woman on IG place her bag under running water and the vachetta totally did not get any water stains! But personally I prefer patina, not too dark, but a nice even honey looks so good on monogram.